A transradial cerebral vascular intervention structure and its auxiliary device

Abstract

The present invention discloses a transradial cerebral vascular intervention structure and an auxiliary device thereof, and belongs to the technical field of medical devices, comprising an outer tube, an inner tube, an exchange guide wire and a bypass tube, wherein the outer tube is sheathed with the inner tube, the inner tube is sheathed with the exchange guide wire, and the bypass tube is sheathed on the outer tube; the present invention can quickly shape a loop, and can more stably and safely push and twist the transradial intervention structure.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a transradial cerebral vascular intervention structure and an auxiliary device thereof. Background Art

[0002] Transradial cerebrovascular interventional surgery is a new surgical method that has advantages in reducing complications at the access site, improving patient comfort, shortening hospital stay, and reducing overall medical costs, and has therefore attracted much clinical attention. The current routine transradial cerebrovascular interventional surgery operation process is as follows: after successful puncture, the guidewire guides the pigtail catheter to the descending aorta for aortic arch angiography; the pigtail catheter is withdrawn under the protection of the inserted guidewire; the Simon catheter is guided to the descending aorta under the guidance of the guidewire, and the guidewire is withdrawn to shape the Simon catheter into a loop; each successfully shaped Simon catheter is used for cerebrovascular angiography ; If the vascular lesion does not need to be treated, insert the guidewire to withdraw the Simon catheter under the protection of the guidewire to end the operation; if the vascular lesion needs to be treated, introduce an exchange guidewire to the distal end through the Simon catheter in place, and then introduce a larger inner diameter access catheter for subsequent treatment after the Simon catheter is withdrawn through the exchange guidewire. There are three problems in the operation process: First, the shaping loop of the Simon catheter. Some patients cannot smoothly enter the descending aorta with the support of the Simon catheter, which leads to shaping difficulties; in order to shape successfully, the operator often adjusts the catheter repeatedly at the aortic arch, and even causes the aortic arch plaque to fall off. The second problem is that the access catheter used when treatment is needed is generally insufficient in support, and the access system may bounce off during the delivery of the stent. The third problem is that the operation process is cumbersome, laborious and time-consuming. The above three problems not only lead to prolonged operation time, and the surgeon and the patient need to accept long-term and high-dose radiation exposure; but also increase the risk of thromboembolism, catheter kinking and vascular stripping. The present invention provides a transradial cerebrovascular interventional surgical device that can take into account simple operation, simple shaping loop, stable system, reduced operation time and operation risk. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a transradial cerebral vascular intervention structure and an auxiliary device thereof, which solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a radial cerebrovascular intervention structure and its auxiliary device, including a frame, and also including: a pushing assembly, used to push the outer tube and perform twist control; the pushing assembly includes an axle, an eccentric wheel, a push rod, a slide, a slider and a splint, the axle is rotatably connected to the frame, the eccentric wheel is fixedly connected to the axle, the eccentric part of the eccentric wheel is rotatably connected to a push rod, the other end of the push rod is hinged on the slide, the slide is slidably connected to the frame, the two sides of the slide are respectively slidably connected to sliders, the tops of the two sliders are fixedly connected to splints, and the axle is connected to the auxiliary assembly.

[0005] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0006] Further technical solution: A first left-handed screw is rotatably connected in the slide, the other end of the first left-handed screw is fixedly connected to the first right-handed screw, the first right-handed screw is rotatably connected to the slide, and the two sliders are respectively threadedly connected to the first left-handed screw and the first right-handed screw.

[0007] Further technical solution: An adjustment component includes a first rack, a second rack, and a slide plate. The first rack and the second rack are respectively fixedly connected to the upper and lower sides inside the frame. The first rack and the second rack are on the same horizontal line. The first rack and the second rack are respectively fixedly connected to the slide plate. The first left-hand screw and the first right-hand screw are respectively fixedly connected to gears.

[0008] Further technical solution: the two slides are respectively threadedly connected to the second left-hand screw and the second right-hand screw, the second left-hand screw is rotatably connected to the frame, the other end of the second left-hand screw is fixedly connected to the second right-hand screw, the second right-hand screw is rotatably connected to the frame, and a rotating shaft is fixedly connected to the second right-hand screw.

[0009] Further technical solution: the base is hinged to the frame, a screw rod is rotatably connected inside the base, a slide cylinder is threadedly connected to the screw rod, the slide cylinder is slidably connected to the base, a push rod is hinged on the slide cylinder, and the other end of the push rod is hinged to the frame.

[0010] Further technical solution: The auxiliary component includes a first pulley, a belt, a second pulley, a shaft and a reel, the first pulley is fixedly connected to the wheel shaft, one end of the belt is transmission connected to the first pulley, the other end of the belt is transmission connected to the second pulley, the second pulley is fixedly connected to the shaft, the shaft is rotatably connected to the frame, and the reel is fixedly connected to the top of the shaft.

[0011] Further technical solution: a third pulley is fixedly connected to the shaft, the third pulley is transmission connected to the first belt, the other end of the first belt is transmission connected to the fourth pulley, a guide rod is fixedly connected to the axis of the fourth pulley, the two guide rods are rotationally connected to the frame, the tops of the two guide rods are respectively fixedly connected to pressure cylinders, the two guide rods are respectively fixedly connected to transmission gears, and the two transmission gears are meshingly connected.

[0012] A further technical solution comprises an outer tube, an inner tube, an exchange guide wire and a bypass tube, wherein the outer tube is sheathed with the inner tube, the inner tube is sheathed with the exchange guide wire, the bypass tube is sheathed on the outer tube, and the length of the exchange guide wire is 260 cm.

[0013] Further technical solution: the length of the inner tube is 125cm, the distal section of the inner tube is a pigtail section, the middle section is a U-shaped section, and the proximal section is a straight section. The pigtail section is in the shape of a circle with a curl at the head end, and the diameter of the curled circle is about 1cm. The curled section can be changed in shape by the passage of the hardened exchange guide wire inside it, and the exit guide wire can automatically restore to the curled shape. The curled section has multiple small holes around it for the contrast agent to flow out, so as to complete aortic arch angiography.

[0014] Further technical solution: The outer tube is 100 cm long, the distal end of the outer tube is U-shaped, and the head end has a reverse 30° bend. The inner diameter of the outer tube can be set to 0.70 inches or 0.60 inches according to the purpose of the operation. The larger inner diameter can be used as a treatment access catheter, which has the characteristics of direct placement and strong support, reducing the operation steps, exposure time and the probability of system bounce; the smaller inner diameter can be used as an inspection catheter for contrast diagnosis. The proximal end of the outer tube is designed as a Y-shaped outlet, which can simultaneously provide liquid circulation and inner tube transportation.

[0015] Beneficial Effects

[0016] The present invention provides a transradial cerebral vascular intervention structure and an auxiliary device thereof, which have the following beneficial effects compared with the prior art:

[0017] 1. After the radial artery puncture and sheath placement are successful, take out the entire set of radial cerebrovascular interventional structures for flushing and assembly. The tail end of the inner tube is connected to the Y valve and the lavage drip, and the outer tube is connected to the lavage drip; the exchange guide wire is inserted into the inner tube through the Y valve; and the bypass tube is pushed to the farthest end of the device to straighten the curled tail end of the inner tube. After the entire device is ready, first insert part of the bypass tube into the radial artery sheath, and then the entire device enters the radial artery sheath and the body through the bypass tube. Under fluoroscopy, the exchange guide wire guides the distal end of the inner tube to the junction of the ascending aorta and the aortic arch. At this time, the inner tube of the device The curled section of the distal pigtail is located in the ascending aorta, the distal end of the outer tube is located in the right subclavian artery, and the bypass tube is still outside the body. Then the exchange guidewire is withdrawn and the inner tube is used to complete aortic arch angiography. Then the exchange guidewire is inserted, the angle of the head end of the inner tube pigtail is adjusted, and the exchange guidewire is introduced into the distal end of the descending aorta. The inner tube is exchanged and withdrawn, and the outer tube is sent to the junction of the aorta and the descending aorta along the exchange guidewire. At this time, the exchange guidewire is withdrawn, or the outer tube is pushed forward at the same time to successfully shape the loop, and then each blood vessel is superselected according to the standard process.

[0018] 2. After the shaping is successful, the relevant technical personnel begin to select each blood vessel. First, the outer tube is placed between the two splints, and the motor is started, so that the push rod connected to the eccentric wheel starts to push the slide hinged to it to perform linear reciprocating motion, and both ends of the push rod are connected with high degrees of freedom, so the distance between the slide and the eccentric wheel can be changed during the rotation of the eccentric wheel. During the sliding process of the slide, the gears on both sides are driven to contact the second rack and the first rack in turn. When the gear contacts the second rack, the gear rolls clockwise on the second rack, so that the two splints start to move towards each other to clamp the outer tube. When the gear is separated from the second rack, the gear fixes its movement posture for a period of time and then starts to contact the first rack. In this process, the splint always clamps the outer tube, so that the slide can push the outer tube during the sliding process; when the gear contacts the first rack, the gear rolls counterclockwise on the first rack, thereby changing the first left-handed screw rod and the first right-handed screw rod fixedly connected to it. The rotation direction of the two clamps causes the two clamps to start to move synchronously to both sides, thereby stopping clamping the outer tube, at which time the pushing action of the outer tube is completed; at the same time, the relevant technicians can manually rotate the screw rod, so that the screw rod drives the sliding cylinder threaded thereon to start sliding, so that the sliding cylinder drives the hinged push rod thereon to move synchronously, so that the push rod pushes the frame hinged thereon, thereby adjusting the pushing angle of the outer tube, thereby adjusting the forward direction of the outer tube in the body; when it is necessary to adjust the pushing length of the outer tube, the relevant technicians manually rotate the rotating shaft, so that the rotating shaft drives the second right-handed screw rod fixedly connected thereto to rotate synchronously, so that the second right-handed screw rod drives the second left-handed screw rod fixedly connected thereto to rotate synchronously, so that the second left-handed screw rod and the second right-handed screw rod drive the slide plate threaded thereon, so that the slide plate drives the second rack and the first rack fixedly connected thereto to move synchronously, thereby adjusting the length of the outer tube pushed by the slide by adjusting the interval time of the forward and reverse rotation of the gear when the slide slides.

[0019] 3. When the relevant technical personnel start the motor, the first gear drives the shaft fixed at the axis center to rotate synchronously, so that the shaft drives the reel fixed thereon to rotate synchronously, so that through the rotation of the reel, when the slide pushes the outer tube, the outer tube wound thereon can be loosened, which is convenient for the slide to push the outer tube. At the same time, when the shaft rotates, the third pulley fixed thereon starts to rotate, so that the fourth pulley starts to rotate synchronously with the cooperation of the first belt connected thereto for transmission, so that the guide rod fixedly connected at the axis center of the fourth pulley starts to rotate, so that the guide rod drives the transmission gear fixed thereon to rotate synchronously in the opposite direction, and the pressing cylinder fixedly connected on the guide rod starts to rotate synchronously, so that when the outer tube passes between the two pressing cylinders, the outer tube can be straightened by the pressing cylinder to prevent it from bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is an enlarged schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the cross-section enlarged structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention.

[0025] Figure 6 It is a schematic diagram of the side cross-sectional structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the side cross-sectional structure of the present invention.

[0027] Figure 8 It is a schematic diagram of the gear motion trajectory structure of the present invention.

[0028] Reference numerals: frame 101, outer tube 102, inner tube 103, exchange guide wire 104, bypass tube 105, push assembly 2, adjustment assembly 3, auxiliary assembly 4, axle 201, eccentric wheel 202, push rod 203, slide 204, first left-hand screw rod 205, first right-hand screw rod 206, slider 207, clamping plate 208, first rack 301, second rack 302, gear 303, slide plate 304, second Left-handed screw 305, second right-handed screw 306, rotating shaft 307, base 308, screw 309, slide cylinder 3001, push rod 3002, first pulley 401, belt 402, second pulley 403, shaft 404, reel 405, third pulley 406, first belt 407, fourth pulley 408, guide rod 409, pressing cylinder 4001, transmission gear 4002, first gear 4003, motor 4004. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] See also Figure 2 , Figure 5 as well as Figure 7 , provided in one embodiment of the present invention, is a radial cerebral vascular intervention structure and an auxiliary device thereof, including a frame 101, and also including:

[0032] Pushing component 2, used for pushing the outer tube and performing twist control;

[0033] The pushing assembly 2 includes an axle 201, an eccentric wheel 202, a push rod 203, a slide 204, a slider 207 and a splint 208. The axle 201 is rotatably connected to the frame 101, the eccentric wheel 202 is fixedly connected to the axle 201, the eccentric wheel 202 is rotatably connected to the push rod 203 at the eccentric position, the other end of the push rod 203 is hinged on the slide 204, the slide 204 is slidably connected to the frame 101, the two sides of the slide 204 are slidably connected to the sliders 207, the tops of the two sliders 207 are fixedly connected to the splints 208, and the axle 201 is connected to the auxiliary assembly 4.

[0034] Specifically, a first left-handed screw rod 205 is rotatably connected to the slide 204, the other end of the first left-handed screw rod 205 is fixedly connected to the first right-handed screw rod 206, the first right-handed screw rod 206 is rotatably connected to the slide 204, and the two sliders 207 are respectively threadedly connected to the first left-handed screw rod 205 and the first right-handed screw rod 206.

[0035] See also Figure 6 , provided as an embodiment of the present invention, an adjustment component 3 includes a first rack 301, a second rack 302, and a slide plate 304. The first rack 301 and the second rack 302 are respectively fixedly connected to the upper and lower sides of the frame 101, and the first rack 301 and the second rack 302 are on the same horizontal line. The first rack 301 and the second rack 302 are respectively fixedly connected with the slide plate 304, and the first left-handed screw rod 205 and the first right-handed screw rod 206 are respectively fixedly connected with the gear 303.

[0036] Specifically, the two slides 304 are respectively threadedly connected to the second left-handed screw rod 305 and the second right-handed screw rod 306, the second left-handed screw rod 305 is rotatably connected to the frame 101, the other end of the second left-handed screw rod 305 is fixedly connected to the second right-handed screw rod 306, the second right-handed screw rod 306 is rotatably connected to the frame 101, and the second right-handed screw rod 306 is fixedly connected with a rotating shaft 307.

[0037] Specifically, the base 308 is hinged to the frame 101, a screw rod 309 is rotatably connected inside the base 308, a slide 3001 is threadedly connected to the screw rod 309, the slide 3001 is slidably connected to the base 308, a push rod 3002 is hinged to the slide 3001, and the other end of the push rod 3002 is hinged to the frame 101.

[0038] In the embodiment of the present invention, after the shaping is successful, the relevant technicians can use the device to assist the outer tube in superselecting each blood vessel. First, the outer tube is placed between the two clamps 208, and the motor 4004 is started, so that the motor 4004 drives the first gear 4003 meshing with its output gear to start rotating, so that the first gear 4003 drives the wheel shaft 201 fixedly connected at its axis to rotate synchronously, and the wheel shaft 201 drives the second pulley 403 fixedly connected thereto to rotate synchronously, so that the first pulley 401 starts to rotate synchronously with the second pulley 403 under the cooperation of the belt 402 connected thereto for transmission, so that the wheel shaft 201 fixedly connected at the axis of the first pulley 401 is driven to rotate synchronously with the second pulley 403. 1 rotates synchronously, so that the wheel shaft 201 drives the eccentric wheel 202 fixedly connected to its top to rotate synchronously, so that the eccentric wheel 202 drives the push rod 203 connected to its eccentricity to rotate synchronously, so that the push rod 203 starts to push the slide 204 hinged thereto, so that the slide 204 slides along the connection between it and the frame 101. During the sliding process of the slide 204, the gear 303 starts to contact the second rack 302, so that the gear 303 starts to rotate under the cooperation of the second rack 302, so that the gear 303 drives the first left-handed screw rod 205 fixedly connected thereto to rotate synchronously, so that the first left-handed screw rod 205 drives the first right-handed screw rod 206 fixedly connected thereto to rotate synchronously, so that the first left-handed screw rod 205 The slider 207 threadedly connected to the screw rod 205 and the first right-hand screw rod 206 begins to slide with the connection between the slide 204, so that the clamping plates 208 fixedly connected to the two sliders 207 rotate synchronously, so that the two clamping plates 208 begin to clamp the outer tube to fix it on the slide 204, and push the outer tube into the patient's body during the sliding of the slide 204. At the same time, when the slide 204 continues to slide, the gear 303 begins to contact the first rack 301, so that the gear 303 begins to reverse with the cooperation of the first rack 301, so that the two clamping plates 208 begin to slide in the opposite direction and stop clamping the outer tube. At this time, if the slide 204 continues to slide, it cannot push the outer tube, so that the outer tube is pushed into the patient's body. When the pushing length of the outer tube needs to be adjusted, the relevant technicians manually rotate the rotating shaft 307, so that the rotating shaft 307 drives the second right-hand screw rod 306 fixedly connected thereto to rotate synchronously, and the second right-hand screw rod 306 drives the second left-hand screw rod 305 fixedly connected thereto to rotate synchronously, so that the second left-hand screw rod 305 and the second right-hand screw rod 306 drive the slide plate 304 threaded thereon, so that the slide plate 304 drives the second rack 302 and the first rack 301 fixedly connected thereto to move synchronously, so that by adjusting the interval time of the forward and reverse rotation of the gear 303 when the slide table 204 slides, the length of the outer tube pushed by the slide table 204 can be adjusted;At the same time, the relevant technicians can manually rotate the screw rod 309, so that the screw rod 309 drives the slide cylinder 3001 threaded thereon to start sliding, so that the slide cylinder 3001 drives the top rod 3002 hinged thereon to move synchronously, so that the top rod 3002 pushes the frame 101 hinged thereto, thereby adjusting the pushing angle of the outer tube 102, thereby adjusting the forward direction of the inner and outer tubes 102. ;

[0039] See also Figure 3 as well as Figure 4 , provided as an embodiment of the present invention, the auxiliary component 4 includes a first pulley 401, a belt 402, a second pulley 403, a shaft 404 and a reel 405, the first pulley 401 is fixedly connected to the wheel shaft 201, one end of the belt 402 is transmission connected to the first pulley 401, the other end of the belt 402 is transmission connected to the second pulley 403, the second pulley 403 is fixedly connected to the shaft 404, the shaft 404 is rotationally connected to the frame 101, and the reel 405 is fixedly connected to the top of the shaft 404.

[0040] Specifically, the shaft 404 is fixedly connected with a third pulley 406, which is in transmission connection with the first belt 407. The other end of the first belt 407 is in transmission connection with the fourth pulley 408. The fourth pulley 408 is fixedly connected with a guide rod 409 at the axis. The two guide rods 409 are rotatably connected with the frame 101. The tops of the two guide rods 409 are respectively fixedly connected with pressing cylinders 4001. The two guide rods 409 are respectively fixedly connected with transmission gears 4002, and the two transmission gears 4002 are meshingly connected.

[0041] In the embodiment of the present invention, when the relevant technicians start the motor 4004, the first gear 4003 drives the shaft 404 fixedly connected at the axis to rotate synchronously, so that the shaft 404 drives the reel 405 fixedly connected thereon to rotate synchronously, so that through the rotation of the reel 405, when the slide 204 pushes the outer tube, the outer tube wound thereon can be loosened, which is convenient for the slide 204 to push the outer tube. At the same time, when the shaft 404 rotates, the third pulley 406 fixedly connected thereon starts to rotate, so that the fourth pulley 408 starts to rotate synchronously with the cooperation of the first belt 407 connected thereto for transmission, so that the guide rod 409 fixedly connected at the axis of the fourth pulley 408 starts to rotate, so that the guide rod 409 drives the transmission gear 4002 fixedly connected thereon to rotate in the opposite direction synchronously, and the pressing cylinder 4001 fixedly connected on the guide rod 409 starts to rotate synchronously, so that when the outer tube 102 passes between the two pressing cylinders 4001, the outer tube 102 can be pressed straight by the pressing cylinder 4001 to prevent it from bending.

[0042] See also Figure 1, provided as an embodiment of the present invention, is a radial cerebral vascular intervention structure, comprising an outer tube 102, an inner tube 103, an exchange guide wire 104 and a bypass tube 105, wherein the outer tube 102 is sheathed with the inner tube 103, the inner tube 103 is sheathed with the exchange guide wire 104, the bypass tube 105 is sheathed on the outer tube 102, and the length of the exchange guide wire is 260 cm.

[0043] Specifically, the inner tube 103 is 125 cm long, the distal section of the inner tube 103 is a pigtail section, the middle section is a U-shaped section, and the proximal section is a straight section. The pigtail section is a circle with the head end curled 360 degrees, and the diameter of the circle is about 1 cm. The curled section can be changed in shape by the passage of the hardened exchange guide wire inside it, and the exit guide wire can automatically restore to the curled shape. The curved section has multiple small holes around it for contrast agent to flow out, so as to complete aortic arch angiography. When the curved section is inserted into a blood vessel, blood is easy to flow out of the body along the small holes thereon. At this time, the bypass tube 105 is put on it to block the small holes, thereby preventing blood from flowing out of the body.

[0044] Specifically, the length of the outer tube 102 is 100 cm, the distal end of the outer tube 102 is U-shaped and the head end has a reverse 30° bend; the inner diameter of the outer tube 102 can be set to 0.70 inches or 0.60 inches according to the purpose of the operation. The larger inner diameter can be used as a treatment access catheter, which has the characteristics of direct placement and strong support, reducing the operation steps, exposure time and the probability of the system bouncing off; the smaller inner diameter can be used as an inspection catheter for angiographic diagnosis, and the proximal end of the outer tube is designed as a Y-shaped outlet, which can simultaneously provide liquid circulation and inner tube transportation.

[0045] In the embodiment of the present invention, after the radial artery puncture and sheath placement are successful, the entire set of radial cerebrovascular interventional structures is taken out for flushing and assembly, the tail end of the inner tube 103 is connected to the Y valve and the lavage drip, and the outer tube 102 is connected to the lavage drip; the exchange guide wire 104 is inserted into the inner tube 103 through the Y valve; and the bypass tube 105 is pushed to the farthest end of the device to straighten the curled tail end of the inner tube 103. After the entire device is ready, part of the bypass tube 105 is first inserted into the radial artery sheath, and then the entire device enters the radial artery sheath and the body through the bypass tube 105. The exchange guide wire 104 is used to guide the distal end of the inner tube 103 to the junction of the ascending aorta and the aortic arch under fluoroscopy. At this time, the inner tube of the device The curled section of the pigtail at the distal end of 103 is located in the ascending aorta, the distal end of the outer tube 102 is located in the right subclavian artery, and the bypass tube 105 is still outside the body. The exchange guide wire 104 is then withdrawn and the inner tube is used to complete aortic arch angiography. The exchange guide wire 104 is then inserted, and the angle of the pigtail head end of the inner tube 103 is adjusted to guide the exchange guide wire 104 into the distal end of the descending aorta. The inner tube 103 is exchanged and withdrawn, and the outer tube 102 is sent along the exchange guide wire 104 to the junction of the aorta and the descending aorta. At this time, the exchange guide wire 104 is withdrawn, or the outer tube 102 is pushed forward at the same time to successfully shape the loop, and then each blood vessel is superselected according to the standard process.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] The fixed connection referred to in this application refers to a connection in which there is no relative movement after the parts or components are fixed. There are two types: detachable connection and non-detachable connection. (1) Detachable connection: The parts are fixed together using screws, splines, wedge pins, etc. This connection method can be disassembled during maintenance without damaging the parts. However, the specifications of the connectors used must be correct (such as the length of bolts, keys, and wedge pins) and they must be properly tightened. (2) Non-detachable connection: mainly refers to welding, riveting, and tenoning. Since forging, sawing, or oxygen cutting are required for disassembly during maintenance or replacement, spare parts generally cannot be reused. At the same time, when connecting, attention should be paid to process quality, technical inspection, and remedial measures (such as calibration, polishing, etc.). The sliding connection referred to in this application refers to the ability of the component to slide along a linear trajectory, and the hinge referred to in this application refers to the ability of the component to rotate along an axial constraint. In some cases, the sliding connection and hinge referred to in this application can also be damped so that the component has the ability to maintain the desired position.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radial cerebrovascular intervention assisting device, characterized in that: It comprises a transradial cerebral vascular intervention structure, and also comprises a frame (101) and a pushing component (2) for pushing an outer tube (102) and performing twist control; The radial cerebral vascular intervention structure comprises an outer tube (102), an inner tube (103), an exchange guide wire (104) and a bypass tube (105); the outer tube (102) is sheathed with the inner tube (103); the inner tube (103) is sheathed with the exchange guide wire (104); the bypass tube (105) is sheathed on the outer tube (102); the inner tube (103) comprises a pigtail segment, a U-shaped segment and a straight segment in sequence; the head end of the pigtail segment is a curled segment, and the curled segment has a plurality of small holes around it for contrast agent to flow out, so as to complete aortic arch angiography; the distal end of the outer tube (102) is a U-shaped bend, and the head end has a reverse 30° bend; the proximal end of the outer tube (102) is designed as a Y-shaped outlet for contrast agent circulation and inner tube (103) delivery; The pushing assembly (2) comprises a wheel axle (201), an eccentric wheel (202), a push rod (203), a slide table (204), a slider (207) and a clamping plate (208); the wheel axle (201) is rotatably connected to the frame (101); the eccentric wheel (202) is fixedly connected to the wheel axle (201); the eccentric wheel (202) is rotatably connected to the push rod (203) at an eccentric position; the other end of the push rod (203) is hinged on the slide table (204); The slide (204) is slidably connected to the frame (101), and sliders (207) are slidably connected to the two sides of the slide (204), and the tops of the two sliders (207) are fixedly connected with clamping plates (208). The wheel shaft (201) is connected to the auxiliary component (4), and the frame (101) is connected to the adjustment component (3). A first left-handed screw rod (205) is rotatably connected to the slide (204), and the other end of the first left-handed screw rod (205) is connected to the first left-handed screw rod (205). A right-hand screw rod (206) is fixedly connected, the first right-hand screw rod (206) is rotatably connected to the slide table (204), and the two sliders (207) are respectively threadedly connected to the first left-hand screw rod (205) and the first right-hand screw rod (206); the adjustment component (3) comprises a first rack (301), a second rack (302) and a slide plate (304), the first rack (301) and the second rack (302) are respectively fixedly connected to the upper and lower sides inside the frame (101), the first rack (301) and the second rack (302) are on the same horizontal line, the first rack (301) and the second rack (302) are respectively fixedly connected to the slide plate (304), the first left-hand screw rod (205) and the first right-hand screw rod (206) are respectively fixedly connected to the gear (303), and the gear (303) is respectively meshed with the first rack (301) and the second rack (302).

2. The radial cerebrovascular intervention assisting device according to claim 1, characterized in that: The two slide plates (304) are respectively threadedly connected to a second left-handed screw rod (305) and a second right-handed screw rod (306); the second left-handed screw rod (305) is rotationally connected to the frame (101); the other end of the second left-handed screw rod (305) is fixedly connected to the second right-handed screw rod (306); the second right-handed screw rod (306) is rotationally connected to the frame (101); and a rotating shaft (307) is fixedly connected to the second right-handed screw rod (306) for driving the second right-handed screw rod (306) to rotate.

3. The radial cerebrovascular intervention assisting device according to claim 1, characterized in that: The frame (101) is hinged to the base (308); a screw rod (309) is rotatably connected inside the base (308); a slide cylinder (3001) is threadedly connected to the screw rod (309); the slide cylinder (3001) is slidably connected to the base (308); a push rod (3002) is hinged to the slide cylinder (3001); and the other end of the push rod (3002) is hinged to the frame (101).

4. The radial cerebrovascular intervention assisting device according to claim 1, characterized in that: The auxiliary component (4) comprises a first pulley (401), a belt (402), a second pulley (403), a shaft (404) and a reel (405); the first pulley (401) is fixedly connected to the wheel shaft (201); one end of the belt (402) is drivingly connected to the first pulley (401); the other end of the belt (402) is drivingly connected to the second pulley (403); the second pulley (403) is fixedly connected to the shaft (404); the shaft (404) is rotatably connected to the frame (101); and the reel (405) is fixedly connected to the top of the shaft (404).

5. The radial cerebrovascular intervention assisting device according to claim 4, characterized in that: A third pulley (406) is fixedly connected to the shaft (404), the third pulley (406) is transmission-connected to the first belt (407), the other end of the first belt (407) is transmission-connected to the fourth pulley (408), a guide rod (409) is fixedly connected to the axis of the fourth pulley (408), the two guide rods (409) are rotationally connected to the frame (101), the tops of the two guide rods (409) are respectively fixedly connected to a pressing cylinder (4001), the two guide rods (409) are respectively fixedly connected to a transmission gear (4002), and the two transmission gears (4002) are meshingly connected.

Images